From 1820d4c73b78ebe5d08921b0b6249c6f72e45215 Mon Sep 17 00:00:00 2001
From: Wolfgang Denk <wd@pollux.denx.de>
Date: Tue, 4 Oct 2005 22:38:24 +0200
Subject: Make sure only supported compiler options are used Import "cc-option"
 shell function from kernel and use it to get the correct ARM GCC options for
 individual CPUs Patch by Peter Pearse, 30 Jun 2005

---
 config.mk | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'config.mk')

diff --git a/config.mk b/config.mk
index ff8309174..0f104398c 100644
--- a/config.mk
+++ b/config.mk
@@ -86,6 +86,12 @@ HOSTCFLAGS	= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
 HOSTSTRIP	= strip
 
 #########################################################################
+#
+# Option checker (courtesy linux kernel) to ensure
+# only supported compiler options are used
+#
+cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
+             > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
 
 #
 # Include the make variables (CC, etc...)
-- 
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